It’s called Waking Up: A Guide to Spirituality Without Religion (Simon & Schuster), it’ll be released this September, and it’s already available for pre-order.
I love the cover. When you zoom out, you can see the face…
… and when you zoom in, you can see a cloud giving the middle finger to God.
At least, that’s what I assume it is.
As Harris wrote in 2012, the book will deal with issues “like the illusion of the self, the efficacy of practices like meditation, the cultivation of positive mental states, etc.” These are also topics he’s hinted at on his blog and in his previous books.